FeatureFlags: Revert managing feature flags outside of settings.Cfg (#44382)

* Revert "FeatureToggles: register all enterprise feature toggles (#44336)"

This reverts commit f53b3fb007.

* Revert "FeatureFlags: manage feature flags outside of settings.Cfg (#43692)"

This reverts commit f94c0decbd.

pkg/infra/httpclient/httpclientprovider/http_client_provider.go

@@ -9,7 +9,6 @@ import (
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/metrics/metricutil"
 	"github.com/grafana/grafana/pkg/infra/tracing"
-	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/mwitkow/go-conntrack"
 )
@@ -17,7 +16,7 @@ import (
 var newProviderFunc = sdkhttpclient.NewProvider
 
 // New creates a new HTTP client provider with pre-configured middlewares.
-func New(cfg *setting.Cfg, tracer tracing.Tracer, features *featuremgmt.FeatureToggles) *sdkhttpclient.Provider {
+func New(cfg *setting.Cfg, tracer tracing.Tracer) *sdkhttpclient.Provider {
 	logger := log.New("httpclient")
 	userAgent := fmt.Sprintf("Grafana/%s", cfg.BuildVersion)
 
@@ -36,7 +35,7 @@ func New(cfg *setting.Cfg, tracer tracing.Tracer, features *featuremgmt.FeatureT
 
 	setDefaultTimeoutOptions(cfg)
 
-	if features.IsHttpclientproviderAzureAuthEnabled() {
+	if cfg.FeatureToggles["httpclientprovider_azure_auth"] {
 		middlewares = append(middlewares, AzureMiddleware(cfg))
 	}